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Family name Gruia (Gruia
, Груя
) , all around the world, is quite a common cognomen. The surname Gruia is characteristic of Romania, where it is quite a common surname, Moldova, where it is quite a rare surname, and Albania, where it is a rare surname. In absolute terms, it is the most numerous in Romania, Italy, and Afghanistan. Much less frequently, Gruia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gruia | Moldova, Romania, Afghanistan, Reunion, Italy |
| Груя | Ukraine, Russia, Kazakhstan |